thanks for the suggestions. basic questions coming back here, i said i thought the compressor was working because i hear it turn on when i plug in the unit. can you recommend a more complete way of testing? also, what to do if indeed there is a leak?
last, i'm still somewhat perplexed by the way the display panel is locked out (yet blinking). i am entirely unable to use any of those buttons.
again, most grateful to any and all who want to comment.